Camper vans are some of the most desirable vehicles we cover on the Telegraph motoring desk. We know this because the web traffic to camper van stories tends to rival that of the supercar reviews, and also because whenever we have a camper van on test, our colleagues badger us to borrow it for a weekend.

That's not to say camper vans are particularly good machines, though. They inevitably offer a compromise between mobility and comfort, with a cramped cabin, uncomfortable beds and no plumbing. Most of them don't even have loos!

Enter the Volkswagen California XXL. It's only a concept at this stage, but it looks remarkably feasible. It's a lot like the smaller California, but based on the Crafter van, it's big enough to accommodate more living space... and a shower. Read on to find out more.